Respuesta :

The first choice is correct. We can check it by cross multiplication.      15x18=270 also 3x90=270.
cheyenne131
A) [tex] \frac{15}{90} = \frac{3}{18} [/tex]
15 ÷ 3 = 5
90 ÷ 18 = 5

B) [tex] \frac{17}{19} = \frac{51}{93} [/tex]
51 ÷ 17 = 3
93 ÷ 19 ≈ 4.9

C) None of these choices are correct

D) [tex] \frac{20}{100} = \frac{5}{40} [/tex]
20 ÷ 5 = 4
100 ÷ 40 = 2.5

E) [tex] \frac{120}{100} = \frac{5}{6} [/tex]
120 ÷ 5 = 24
100 ÷ 6 ≈ 16.7


Having done the math, the answer is A.